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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Way to know everything is alright with the breeding male






2. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






3. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






4. 283 days






5. Provide nourishment for the developing sperm






6. 19-23 (21) days






7. 114 days






8. Microscopic - make sure not sterile - very few bulls are actually tested






9. Milk is 15% ________ and 85% __________.






10. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






11. Not under a timeline - cow can not be sold as steak






12. What makes the milk flow through the mammary glands?






13. 265-285 days






14. Prevent the cow from getting an infection from the calve






15. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






16. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






17. Animal which has been castrated after puberty






18. Sperm production






19. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






20. Luteolysis happens because of the ____________ hormone






21. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






22. Depository for semen during insemination. where urine leaves the body






23. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






24. Animals which have many estrous periods per year (ex: cow - sow)






25. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






26. Animals which have many estrous periods per year (ex: cow - sow)






27. 1-3 days






28. Duct through penis that carries sperm and urine






29. Days which have increasing daylight hours

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30. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






31. Way to know everything is alright with the breeding male






32. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






33. FEED






34. 30-38 hours after estrus cycle begins






35. 336 days






36. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






37. Superior genes are _______ to multiply






38. Depository for semen during insemination. where urine leaves the body






39. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






40. Animal which has been castrated after puberty






41. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






42. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






43. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






44. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






45. The more stressed out the male is - the less sperm he is going to produce






46. (male) pushes the testes outward toward the legs for a cool-down off of the body






47. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






48. Larger the cow - more milk is produced; smaller the cow - less milk is produced






49. Not under a timeline - cow can not be sold as steak






50. Sperm is produced here